A senior UN official says there are fragile signs that Burma's co-operation with the international aid effort for victims of Cyclone Nargis is improving.Kathleen Cravero of the UN Development Programme told the BBC that visas had become more easily available and access to affected areas was getting better.
But she said more was needed and said the UN would continue to monitor the Burmese government's stance.
On Sunday, international donors pledged nearly $50m (�25m) to help relief work.
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